Sure man chime in about your grow and ask questions. There's a few people in here that could help you out. I'm using the GH trio at about 1/2 strength now, Hydroguard at 75%, Z7 at full. Last 2 are for the DWC. Right around 685PPM (My water is ~85).
My side grow I report on every few days are auto's in CoCo though. Same nutes minus the hydroguard but add CalMAg. Week 4 from seed. Those nutes are at 1/2 strength now but were none first week, 1/4 week 2 & 3. I water 2 days of nutes and do a calmag/ph 25% runoff every third day. Auto's seem to be a bit grumpy about nutes at an early age.
I know most coco growers will probably tell you to "reset" the conditions in case of lockout which is what you could be seeing. Run at least a couple gallons of CalMAg/PH water through your pots until you have the PPM low then maybe drop your PPM to 500PPM? I don't see nutrient burn (which I've already done to mine lol) so it looks like a coco nute lockout. More won't help until you flush. Just my 2 cents as a noob grower.